One Improvement?

[popovm]

1 hour ago, Son of Marty said:

Go to the next club track day and ride with a old time 02 driver😎.

"Driver mod" 😁

[g_force]

To sum it up, since it's a tii:

 

- higher compression pistons (don't do a cam, it won't run right)

- lower ratio rear end, since you've a 5spd

- (not previously suggested) get a 123 distributor so your curve is perfect (tii are sensitive to timing)

 

Edited August 4, 2023 by g_force

[tzei]

300 deg cam is max you can get away with k-fish (as per factory: 11310631009).

[Son of Marty]

2 hours ago, tzei said:

300 deg cam is max you can get away with k-fish (as per factory: 11310631009).

Only if you know a great pump tuner and their getting pretty thin on the ground now days.

[popovm]

3 hours ago, g_force said:

 

- lower ratio rear end, since you've a 5spd

 

 

LSD if OP wants it to power out of hard corners better, but I am guessing they are talking about straight line grunt.

[beammmer]

8 hours ago, ray_ said:

BOO!

Or an S2?

[ray_]

10 hours ago, beammmer said:

Or an S2?

BOO 😁

[TobyB]

Eeek. 

 

But, Ray,

despite the decorations being up in the Home Despots,

Halloween isn't for months yet...

 

t

 

[Gordon]

Since you have a 73 tii, do only one upgrade to the motor.  Rebuild it with higher compression pistons (9.5:1) to bring it up to Euro tii specs.  Leave the rest of the motor alone. 

[HLBlanton]

Gordon - that is what I've landed on. A modest change, but it is "on our way" so not a ton of work, and hopefully a bit of a bump.

 

I had gotten interested in putting in a Metric Mechanic engine (it looks like they do a good  job and thinking about 165HP makes me feel special.) My motor is not number matching so that isn't a problem.  But the price on the MM website says $10k and in fact is is now $13k. More importantly, there is more than a 12 month waitlist. Good for them I guess. 9.5# pistons for me.

 

Thanks to everyone for their input. I"ve learned a lot.

[tech71]

On 8/4/2023 at 5:25 PM, popovm said:

but I am guessing they are talking about straight line grunt.

If so, then OP should just get a different car with a V8 and leave the poor little Tii be😉

Gruntiest car I ever owned was a 72 Nova with 427 big block, 373 posi, and Hurst line locks. Pretty much instant sideways if you wanted. Nothing that isn't a frame bending, driveline snapping, roll up in a ball and kill you 2002 monster mutant can approach that.

02 wise that is..

Edited August 6, 2023 by tech71

[Einspritz]

9.5 CR, E12 head, 100 Octane and a properly tuned system.

 

Stay above 4000 RPM.

 

And never drive too much above redline in any gear for any length of time.

 

After that the pump can't deliver enough fuel.

[popovm]

On 8/6/2023 at 9:02 AM, tech71 said:

If so, then OP should just get a different car with a V8 and leave the poor little Tii be😉

Gruntiest car I ever owned was a 72 Nova with 427 big block, 373 posi, and Hurst line locks. Pretty much instant sideways if you wanted. Nothing that isn't a frame bending, driveline snapping, roll up in a ball and kill you 2002 monster mutant can approach that.

02 wise that is..

 

Yup, agreed!

[HLBlanton]

Lookin' like the 9.5 is the way to go. But where to get 100 octane? I guess I can get some 5 gallon pails shipped from Sunoco (I am in SF and definitely don't want to store a 54-gallon drum here. Get 6 pails at a time I guess - 3 to fill it up, and 3 spares. Long drives will take a bit of planning to find stations that carry the good stuff.

 

Any thoughts on what my expectations should be with the 9.5 w/ 100 octane juice should be?

[Mike G]

You don’t need 100 octane for 9.5. Premium should be fine, if it pings a little torco race gas concentrate works well and is widely available.